Providing/Installation/Testing and Commissioning of LRS suitable for 300 KW/400 HP BHEL make 3-phase 50Hz, 6.6 KV slip ring type vertical solid shaft HT 6.6 KV slip ring motor pumping unit No1 and 4 including control/safety devices at LIS Rajal.

Providing, installation, testing and commissioning of 6.6 ± 10% KV volt Motor operated LRS suitable for 980 RPM speed, 6 pole, 400HP/300KW, HT motor pumping unit no. 1 & 4 installed at lift irrigation station Rajal after dismantling the damaged /worn-out old LRS, The LRS is designed to meet and satisfy the voltage at starting and continuous full load running requirement of the motor i.e. from stand still to fully run-up condition of pump set during which period the motor will simultaneously supply full pumping load. The starter ensures high / adequate starting torque and low running slip. The transition from start to run position of moving electrode in the electrolyte is smooth and enables the motor to develop uniform torque and smooth acceleration during starting period. The starter is floor mounting type with welded steel tank having sufficient capacity to fill electrolyte. The same has drip proof enclosure, complete with three insulated chambers inside the tank with overflow outlet, (level indicator, drain cock, topping up cock and screened vapor relief vent. The tank is designed to ensure effective dissipation of heat generated during/starting period of the motor. The starter is supplied with requisite quantity of dry alkaline salt, sodium carbonate for preparation of first filling of electrode with sufficient spare quantity for further preparation. A suitable end box with bushes and glands is provided on the starter tank for connection electrodes system of the starter with the rotor slip ring through cables. The starter is provided with moving electrodes of suitable design for balanced and smooth start position. The starter is complete with liberally dimensioned copper shunts, copper strips and heavy duty copper to copper shorting bar to carry maximum load. For protecting the motor winding against starting surge, the design of the starter is such as to ensure that the rotor circuit is never open circuited in the starter and even in off position of the starter. The moving parts inside the starter tank are corrosion resistant and material at times of contacts is resistant against arcing and contact wear. The starter tank from inside and outside is painted with anticorrosive two times paint and is also be given an outer coat of paint in pleasing colour. The moving electrode system is operated by pilot motor suitable for operation on 220 + 10% volts, A.C, 50 Hz. Supply, necessary gear box is provided to cutout the circuit at the end of traverse of moving contacts in either direction to prevent over travel of electrodes and damage to any part of the starter. It should floor mounting free standing, dust vermin proof construction, tank in 3mm CRCA sheet fabricated with M.S. fixed moving electrodes system having horizontal movement, as motorized mechanism box, with manual start provision, cable box & control panel for rotor control with all necessary interlock facility with stator( Air Break Contactor),Rotor panel comprises of indicating lamp-3nos.(Resistance IN ,Resistance OUT, Stator ON), push buttons-3nos., Auxiliary contactor, triple pole power contactor MNX 550A, selector switch for AUTO/MANUAL, These will have interlock arrangement with stator so that motor may not START in any case unless resistance is fully in position. Indicators are provided at conspicuous place on the starter to indicate the two end positions of the moving electrodes. The cutout arrangement is through limit switches. A provision is also made to operate the starter manually by hand during which the operation of pilot motor will be automatically changed mechanically. The Starter is provided with push button control for driving the pilot motor or switch other direction in this push button control duplicated in the respective motor control panels board also. An emergency push button is also is provided on the starter for emergency supply of 415 V motor control gear. The job includes connecting the New LRS with already existed earthing. The job also includes providing fitting and laying of 4 core, 2.5 sq. mm armoured copper cable 20 mtr approx. including cutting & chiseling wastage from 415 existed panel to new LRS with required thimbles at their respective ends, it further includes providing, fitting and laying of 2 core,1.5 sq mm copper cable 20mtr approx. including cutting & chiseling wastage etc from high tension VCB to new LRS with required thimbles and nut bolts etc. A provision of electrical interlocking of stator and rotor panel of liquid rotor starter is also required. The job includes cost of high quality necessary meters and cables with connections. The material used is heavy duty and the unit is capable of running at variable phase to phase input voltages. Complete job includes cost of material, labour charges, transport charges including installation and testing & commissioning of Liquid Rotor Starter for pumping unit number no 1 & 4 after dismantling the damaged at LIS Rajal and placing the worn out/damaged to store for making the free space in the lift station. to The job includes cost of material, transportation charges ,labour charges for skilled and semiskilled workers for execution of job/handling the components with hire charges for deployment of tools and tackles at site. (Quantity - 2 Jobs). Complete Job